Tetra Tech Inc
TTEK- Exchange
- Nasdaq
- Industry
- Services-Engineering Services
- SEC CIK
- 0000831641
No open-market purchases or sales by Tetra Tech Inc insiders were filed in the last 90 days; 555 institutions reported holding it in 13F filings for Q2 2026, worth $7.32B in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Tetra Tech Inc as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 597
- +14 vs. Q2 2025
- Shares held
- 246.3M
- −56.3K (0.0%) vs. Q2 2025
- Total value
- $8.22B
- −$607.6M (−6.9%) vs. Q2 2025
- New holders
- 74
- 231 more added
- Sold out
- 60
- 202 more reduced
7 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TTEK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 555 | $7.32B |
| Q1 2026 | 593 | $7.35B |
| Q4 2025 | 611 | $8.10B |
| Q3 2025 | 597 | $8.22B |
| Q2 2025 | 590 | $8.94B |
| Q1 2025 | 568 | $7.18B |
| Q4 2024 | 638 | $9.45B |
| Q3 2024 | 646 | $11.2B |
| Q2 2024 | 600 | $9.88B |
| Q1 2024 | 512 | $8.66B |
| Q4 2023 | 510 | $7.87B |
| Q3 2023 | 471 | $7.09B |
| Q2 2023 | 455 | $7.67B |
| Q1 2023 | 445 | $6.81B |
| Q4 2022 | 470 | $6.68B |
| Q3 2022 | 412 | $5.91B |
| Q2 2022 | 415 | $6.31B |
| Q1 2022 | 404 | $7.86B |
| Q4 2021 | 401 | $7.93B |
| Q3 2021 | 359 | $7.08B |
| Q2 2021 | 366 | $5.68B |
| Q1 2021 | 365 | $6.39B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Jane Street Group, LLC | 371,879 | $12.4M | 0.01% | −188,683−33.7% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 379,951 | $12.7M | 0.04% | +279,423+278.0% | Added |
| Price T Rowe Associates Inc | 394,847 | $13.2M | 0.00% | +20,000+5.3% | Added |
| Barclays PLC | 401,860 | $13.4M | 0.00% | +168,918+72.5% | Added |
| Ninety One North America, Inc. | 404,095 | $13.5M | 0.61% | +19,306+5.0% | Added |
| Sarasin & Partners LLP | 409,723 | $13.8M | 0.14% | −4,273,853−91.3% | Reduced |
| Trillium Asset Management, LLC | 418,721 | $14.0M | 0.37% | −4,307−1.0% | Reduced |
| Legal & General Group Plc | 423,199 | $14.1M | 0.00% | −17,062−3.9% | Reduced |
| Winslow Asset Management Inc | 442,701 | $14.8M | 2.77% | −5,161−1.2% | Reduced |
| HSBC Holdings PLC | 445,007 | $14.9M | 0.01% | +80,489+22.1% | Added |
| Candriam Luxembourg S.C.A. | 447,729 | $14.9M | 0.08% | −50,530−10.1% | Reduced |
| one8zero8, LLC | 467,746 | $15.6M | 3.37% | +8,001+1.7% | Added |
| SEI Investments Co | 468,993 | $15.7M | 0.02% | −21,805−4.4% | Reduced |
| Ci Investments Inc. | 474,489 | $15.8M | 0.06% | −22,987−4.6% | Reduced |
| Retirement Systems of Alabama | 477,575 | $15.9M | 0.05% | +51,748+12.2% | Added |
| Swiss National Bank | 485,400 | $16.2M | 0.01% | −1,100−0.2% | Reduced |
| Gotham Asset Management, LLC | 486,869 | $16.3M | 0.07% | +388,071+392.8% | Added |
| Two Sigma Investments, LP | 492,302 | $16.4M | 0.03% | +394,091+401.3% | Added |
| TimesSquare Capital Management, LLC | 495,020 | $16.5M | 0.24% | −552,776−52.8% | Reduced |
| LPL Financial LLC | 496,817 | $16.6M | 0.00% | −47,078−8.7% | Reduced |
| Los Angeles Capital Management LLC | 499,178 | $16.7M | 0.06% | +213,032+74.4% | Added |
| Renaissance Technologies LLC | 507,700 | $16.9M | 0.02% | +115,200+29.4% | Added |
| Baillie Gifford & Co | 523,150 | $17.5M | 0.01% | −64,720−11.0% | Reduced |
| Nuveen, LLC | 527,111 | $17.6M | 0.00% | −385,793−42.3% | Reduced |
| California Public Employees Retirement System | 529,001 | $17.7M | 0.01% | +22,872+4.5% | Added |
| Russell Investments Group, Ltd. | 533,390 | $17.8M | 0.02% | +35,545+7.1% | Added |
| Rockefeller Capital Management L.P. | 577,577 | $19.3M | 0.04% | −145,453−20.1% | Reduced |
| Principal Financial Group Inc | 583,492 | $19.5M | 0.01% | −14,861−2.5% | Reduced |
| Allspring Global Investments Holdings, LLC | 618,862 | $20.5M | 0.03% | −361,449−36.9% | Reduced |
| AQR Capital Management LLC | 636,651 | $21.3M | 0.01% | +371,823+140.4% | Added |
| Segall Bryant & Hamill, LLC | 677,463 | $22.6M | 0.30% | −240,448−26.2% | Reduced |
| Fisher Asset Management, LLC | 709,366 | $23.7M | 0.01% | −16,258−2.2% | Reduced |
| Rhumbline Advisers | 720,797 | $24.1M | 0.02% | −10,337−1.4% | Reduced |
| New York State Common Retirement Fund | 730,541 | $24.4M | 0.03% | +2,949+0.4% | Added |
| Bowen Hanes & Co Inc | 737,425 | $24.6M | 0.62% | −1,098,965−59.8% | Reduced |
| Arrowstreet Capital, Limited Partnership | 749,756 | $25.0M | 0.02% | −156,477−17.3% | Reduced |
| Envestnet Asset Management Inc | 754,617 | $25.2M | 0.01% | +9,015+1.2% | Added |
| BNP Paribas Arbitrage, SA | 759,341 | $25.3M | 0.02% | −10,307−1.3% | Reduced |
| Robeco Institutional Asset Management B.V. | 771,518 | $25.8M | 0.04% | +121,020+18.6% | Added |
| Bank of Nova Scotia | 832,998 | $27.8M | 0.05% | +81,600+10.9% | Added |
| Managed Asset Portfolios, LLC | 869,633 | $29.0M | 3.59% | +14,067+1.6% | Added |
| Royal Bank of Canada | 884,742 | $29.5M | 0.01% | −78,923−8.2% | Reduced |
| Value Holdings Management Co. LLC | 907,325 | $30.3M | 4.85% | 00.0% | Unchanged |
| Wells Fargo & Company | 915,911 | $30.6M | 0.01% | +620.0% | Added |
| Nomura Asset Management Co Ltd | 918,103 | $30.6M | 0.08% | +53,214+6.2% | Added |
| iA Global Asset Management Inc. | 920,130 | $30.7M | 0.42% | −29,601−3.1% | Reduced |
| Schroder Investment Management Group | 944,703 | $31.8M | 0.02% | −121,089−11.4% | Reduced |
| Neumeier Poma Investment Counsel LLC | 979,388 | $32.7M | 2.68% | +91,887+10.4% | Added |
| Citadel Advisors LLC | 999,369 | $33.4M | 0.03% | −1,874,191−65.2% | Reduced |
| Fernbridge Capital Management LP | 1,015,666 | $33.9M | 1.65% | +72,243+7.7% | Added |
| Wellington Management Group LLP | 1,052,931 | $35.1M | 0.01% | −331,456−23.9% | Reduced |
| PGGM Investments | 1,099,907 | $36.7M | 0.59% | +268,174+32.2% | Added |
| Jacobs Levy Equity Management, Inc | 1,174,227 | $39.2M | 0.16% | −105,414−8.2% | Reduced |
| UBS Group AG | 1,190,113 | $39.7M | 0.01% | +164,756+16.1% | Added |
| UBS Asset Management Americas Inc | 1,217,014 | $40.6M | 0.01% | −257,519−17.5% | Reduced |
| Bessemer Group Inc | 1,384,599 | $46.2M | 0.07% | +414,581+42.7% | Added |
| Deutsche Bank AG | 1,385,890 | $46.3M | 0.02% | +522,937+60.6% | Added |
| JPMorgan Chase & Co | 1,398,293 | $46.7M | 0.00% | +116,993+9.1% | Added |
| Millennium Management LLC | 1,421,186 | $47.4M | 0.04% | +545,502+62.3% | Added |
| Premier Fund Managers Ltd | 1,420,250 | $47.8M | 1.96% | +114,588+8.8% | Added |
| Standard Life Aberdeen plc | 1,504,307 | $50.3M | 0.08% | −51,404−3.3% | Reduced |
| Quantinno Capital Management LP | 1,532,280 | $51.1M | 0.14% | +740,131+93.4% | Added |
| King Luther Capital Management Corp | 1,646,327 | $55.0M | 0.23% | +3,170+0.2% | Added |
| Allianz Asset Management GmbH | 1,721,206 | $57.5M | 0.07% | −298,366−14.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 1,740,177 | $58.1M | 0.13% | −461,054−20.9% | Reduced |
| CI Private Wealth, LLC | 1,762,417 | $58.8M | 0.09% | −256,174−12.7% | Reduced |
| Copeland Capital Management, LLC | 1,763,618 | $58.9M | 1.23% | −89,869−4.8% | Reduced |
| Janus Henderson Group PLC | 1,772,864 | $59.2M | 0.03% | +1,665,639+1,553.4% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 1,780,768 | $59.4M | 0.10% | +24,338+1.4% | Added |
| Capital Research Global Investors | 1,787,103 | $59.7M | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 1,935,482 | $64.6M | 0.01% | +965,050+99.4% | Added |
| Aviva PLC | 1,944,235 | $64.9M | 0.12% | +951,724+95.9% | Added |
| First Trust Advisors LP | 1,981,493 | $66.1M | 0.05% | +679,424+52.2% | Added |
| Van Berkom & Associates Inc. | 2,065,070 | $68.9M | 1.99% | +2,259+0.1% | Added |
| Charles Schwab Investment Management Inc | 2,131,414 | $71.1M | 0.01% | +20,328+1.0% | Added |
| Invesco Ltd. | 2,310,220 | $77.1M | 0.01% | −219,965−8.7% | Reduced |
| Robeco Schweiz AG | 2,379,020 | $79.4M | 1.79% | −418,914−15.0% | Reduced |
| Morgan Stanley | 2,381,396 | $79.5M | 0.00% | −313,270−11.6% | Reduced |
| M&G Plc | 2,409,574 | $79.5M | 0.42% | −6,938−0.3% | Reduced |
| Ameriprise Financial Inc | 2,536,018 | $84.7M | 0.02% | +139,037+5.8% | Added |
| Northern Trust Corp | 2,552,207 | $85.2M | 0.01% | −43,497−1.7% | Reduced |
| Bank of New York Mellon Corp | 2,636,199 | $88.0M | 0.02% | +135,928+5.4% | Added |
| Ninety One UK Ltd | 2,870,244 | $95.8M | 0.21% | +78,332+2.8% | Added |
| LGT Group Foundation | 2,978,570 | $98.9M | 1.13% | +176,302+6.3% | Added |
| Bank of America Corp | 3,012,051 | $100.5M | 0.01% | +42,406+1.4% | Added |
| Dimensional Fund Advisors LP | 3,593,261 | $119.9M | 0.03% | +48,163+1.4% | Added |
| FIL Ltd | 4,286,250 | $143.1M | 0.11% | −366,149−7.9% | Reduced |
| Geode Capital Management, LLC | 5,029,967 | $167.9M | 0.01% | +68,006+1.4% | Added |
| Amundi | 5,759,681 | $193.3M | 0.06% | −1,003,732−14.8% | Reduced |
| Alliancebernstein L.P. | 6,581,244 | $219.7M | 0.07% | +705,673+12.0% | Added |
| Capital International Investors | 7,079,675 | $236.3M | 0.04% | +5,051,485+249.1% | Added |
| Sands Capital Management, LLC | 7,179,032 | $239.6M | 0.66% | +1,978,697+38.0% | Added |
| Neuberger Berman Group LLC | 9,027,698 | $301.3M | 0.22% | +124,570+1.4% | Added |
| State Street Corp | 11,292,728 | $377.0M | 0.01% | −649,011−5.4% | Reduced |
| Pictet Asset Management Holding SA | 14,189,245 | $473.6M | 0.46% | +341,144+2.5% | Added |
| BlackRock, Inc. | 25,506,017 | $851.4M | 0.01% | −189,476−0.7% | Reduced |
| Vanguard Group Inc | 26,301,722 | $878.0M | 0.01% | −279,459−1.1% | Reduced |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −1,131,888−100.0% | Sold out |
| Bornite Capital Management LP | 0 | $0 | 0.00% | −1,028,100−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −522,298−100.0% | Sold out |